| 词条 | Oxia Planum |
| 释义 |
|name = Oxia Planum |image = |location = Oxia Palus quadrangle |coordinates = {{coord|18.275|N|335.368|E|globe:mars_type:landmark|display=inline,title}} }}Oxia Planum is a plain located on Mars (near {{coord|18.275|335.368|globe:Mars}})[1] that has been chosen as a preferred landing location for the ExoMars rover,[2][3] with an elevation more than 3000 meters below the Martian mean.[4] OverviewOxia Planum contains one of the largest exposures of clay-bearing rocks and are around 3.9 billion years old.[5] The site is iron-magnesium rich clays, indicating that water once played a role here. The site sits in an area of valley systems with the exposed rocks exhibiting different compositions, indicating a variety of deposition and wetting environments. Clay accumulation underneath the remnants of a fan or delta near the outlet of Coogoon Vallis may offer preservation for biosignatures against the planet's harsh radiation and oxidation environment.[5][6][7] {{multiple image|center|caption_align=center|header_align=center|align=center|header= |width=300 |direction=horizontal|image1=NASA-OxiaPlanum-LocationMap-20151021.png |width1= |caption1= |image2=NASA-OxiaPlanum-GeologicalContext-Morphology-20140514.jpg |width2= |caption2= |footer= }} See also
References1. ^{{cite web |last=Bridges |first=John |title=Clay-Rich Terrain in Oxia Planum: A Proposed ExoMars Landing Site |url=http://hirise.lpl.arizona.edu/ESP_039154_1985 |date=July 1, 2015 |work=Arizona University |accessdate=October 21, 2015 }} 2. ^{{cite news |last=Amos |first=Jonathan |title=ExoMars rover: Landing preference is for Oxia Planum |url=https://www.bbc.com/news/science-environment-34584214 |date=October 21, 2015 |work=BBC News |accessdate=October 22, 2015 }} 3. ^{{cite web |last=Atkinson |first=Nancy |title=Scientists Want ExoMars Rover to Land at Oxia Planum |url=http://www.universetoday.com/123018/scientists-want-exomars-rover-to-land-at-oxia-planum/ |date=October 21, 2015 |work=Universe Today |accessdate=October 22, 2015 }} 4. ^ESA mission updates. Emily Lakdawalla; 5 November 2015. 5. ^1 {{cite news |last=Durnham |first=R. |url=http://redplanet.asu.edu/?p=15954 |title=ExoMars 2018 rover heading for Oxia Planum |work=Red Planet Report |date=October 21, 2015 |accessdate=October 22, 2015 }} 6. ^{{cite web |url=http://marsnext.jpl.nasa.gov/workshops/2014_05/14_Oxia_Thollot_webpage.pdf |format=PDF |title=Oxia Planum, landing site for Mars 2020 |last=Thollot |first=P. |last2=Quantin |first2=C. |date=May 14, 2014 |work=Universite de Lyon, France |accessdate=October 22, 2015 }} 7. ^{{cite web |author=Staff |url=http://www.uahirise.org/ESP_037070_1985 |title=Possible Future Mars Landing Site in Oxia Planum - High Resolution Imaging Science Experiment |work=The University of Arizona |date=October 1, 2014 |accessdate=October 21, 2015 }} External links
2 : Oxia Palus quadrangle|Plains on Mars |
| 随便看 |
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。